Chock for railway-cars.



S. OTIS.

GHOGK FOR RAILWAY 0.411s.

APPLICATION FILED JUNE 24. 1907.

Patented Nov. 17, 1908.

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UNITED STATES PATENT OFFICE.

SPENCER OTIS, OF CHICAGO, ILLINOIS, ASSIGNOR TO GRAVITY COAL BINCOMPANY, A CORPORATION OF MAINE.

CHOCK FOR RAILWAY-CARS.

Specification of Letters Patent.

Patented Nov. 17, 1908.

Application filed June 24, 1907. Serial No. 380,496. I

To all whom it may concern:

Be it known that I, SPENCER OTIS, a citizen of the United States,residing at Ohicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Chocks for Railway-Cars,of which the following is a specification.

The object of my invention is to provide a new and improved device forholding railway cars against movement when upon an inclined track.

In the drawingFigure 1 is a view of my invention, together with a pairof wheels to which it is applied. Fig. 2 is a view, partly in section,of the structure shown in Fig. 1. Fig. 3 is a detail view of one of thechocks and part of the transverse beam to which it is secured.

In the embodiment of my invention illustrated in the drawing, I haveshown the chocks a, a secured to the ends of a transverse beam b. Thebeam, together with the chocks, may be suspended from any convenientpart of the car. In the present instance I have shown the beamssuspended by chains 0, which are looped about the axle d.

The chocks consist of metal blocks 6 approximately triangular in shape.The upper surface of each of the chocks is curved, as shown at f, toconform to the periphery of the Wheel and is also grooved as inclicatedat h to receive the flange of the wheel. The lower surface 9 of thechock is disposed at such an angle to the upper surface that the chockwill fit snugly into the angular space between the wheel and the track.Upon either side the chock is provided with perforated cars is. Boltspassing through these perforations and correspondlng perfo rations inthe beam 6 serve to secure the chocks in place. In order to lighten thestructure I have shown the chocks as being formed with cavities Z. Thetransverse beam preferably takes the form of an angle iron asillustrated.

As shown inFig. 2 of the drawings, the curved upper surface of the chockapproximates closely at all points to the tread of the Wheel when thestraight lower surface of the chock rests uponthe rail. It is old in theprior art to make chocks with a wed ing action and even with a curvedupper sur ace, but it is original with me to make them so that the treadsurface of the wheel will rest upon the curved upper surface of thechock over an extended surface at one time. The advantage of this isthat it prevents the wheel from being lifted off the rail. It willreadily be seen that if the chock had more nearly the form of a thinWedge, the wheel might ride upon it, thus lifting the wheel flange abovethe rail, in which case a lateral displacement would derail the car.

What I claim is:

1. In a car, a chock consisting of a block of metal having one sidecurved to fit the periphery of the wheel over an extended surface andanother side disposed at such an angle to the first-mentioned side thatthe block will at the same time conform to the angular space between thewheel and the track.

2. In a car, a transverse beam, chains for suspending the same from thecar, and chocks secured to the ends of said beam and adapted to bearupon the wheels and track.

3. In a car, a transverse beam, chains for suspending the same from thecar, and chocks secured to said beam adjacent the ends thereof.

l. In a car, a chock having a curved wheel bearing portion and a trackbearing portion, the wheel bearing portion being provided with a grooveto conform to the flange of the wheel and the track bearing portionbeing provided with a flange adapted to lie on the outer side of therail.

5. In a car, a chock having a curved wheel bearing portion and a trackbearing portion, the wheel bearing portion being provided with a grooveto conform to the flange of the wheel and the track bearing portionbeing provided with a flange adapted to lie on the outer side of therail, perforated cars upon said chock, and a transverse beam to whichsaid chock is secured by bolts passing through said ears.

6. In a car, a transverse beam, chocks at the ends of said beam, andchains suspending the same from the axle, said chocks having surfacesconforming to the Wheels and track.

W. T. Jones.

